PMID- 35682884 OWN - NLM STAT- MEDLINE DCOM- 20220613 LR - 20220716 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 23 IP - 11 DP - 2022 Jun 1 TI - AMPK and the Challenge of Treating Hypoxic Pulmonary Hypertension. LID - 10.3390/ijms23116205 [doi] LID - 6205 AB - Hypoxic pulmonary hypertension (HPH) is characterized by sustained elevation of pulmonary artery pressure produced by vasoconstriction and hyperproliferative remodeling of the pulmonary artery and subsequent right ventricular hypertrophy (RVH). The search for therapeutic targets for cardiovascular pathophysiology has extended in many directions. However, studies focused on mitigating high-altitude pulmonary hypertension (HAPH) have been rare. Because AMP-activated protein kinase (AMPK) is involved in cardiovascular and metabolic pathology, AMPK is often studied as a potential therapeutic target. AMPK is best characterized as a sensor of cellular energy that can also restore cellular metabolic homeostasis. However, AMPK has been implicated in other pathways with vasculoprotective effects. Notably, cellular metabolic stress increases the intracellular ADP/ATP or AMP/ATP ratio, and AMPK activation restores ATP levels by activating energy-producing catabolic pathways and inhibiting energy-consuming anabolic pathways, such as cell growth and proliferation pathways, promoting cardiovascular protection. Thus, AMPK activation plays an important role in antiproliferative, antihypertrophic and antioxidant pathways in the pulmonary artery in HPH. However, AMPK plays contradictory roles in promoting HPH development. This review describes the main findings related to AMPK participation in HPH and its potential as a therapeutic target. It also extrapolates known AMPK functions to discuss the less-studied HAPH context. FAU - Flores, Karen AU - Flores K AD - Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile. AD - Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, 20251 Hamburg, Germany and Iquique 1100000, Chile. FAU - Siques, Patricia AU - Siques P AUID- ORCID: 0000-0002-4963-195X AD - Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile. AD - Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, 20251 Hamburg, Germany and Iquique 1100000, Chile. FAU - Brito, Julio AU - Brito J AUID- ORCID: 0000-0002-0050-8774 AD - Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile. AD - Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, 20251 Hamburg, Germany and Iquique 1100000, Chile. FAU - Arribas, Silvia M AU - Arribas SM AD - Department of Physiology, University Autonoma of Madrid, 28049 Madrid, Spain. LA - eng GR - BIP30477541-0 / BIP30487388-0/GORE-FIC TARAPACA BIP30477541-0 / GORE-FIC TARAPACA BIP30487388-0/ PT - Journal Article PT - Review DEP - 20220601 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 8L70Q75FXE (Adenosine Triphosphate) RN - EC 2.7.11.31 (AMP-Activated Protein Kinases) RN - Pulmonary edema of mountaineers SB - IM MH - *AMP-Activated Protein Kinases/metabolism MH - Adenosine Triphosphate MH - Altitude Sickness MH - Humans MH - *Hypertension, Pulmonary/drug therapy/etiology/pathology MH - Hypoxia MH - Pulmonary Artery/pathology PMC - PMC9181235 OTO - NOTNLM OT - AMPK OT - cardioprotection OT - high altitude OT - hypoxic pulmonary hypertension COIS- The authors declare no conflict of interest. EDAT- 2022/06/11 06:00 MHDA- 2022/06/14 06:00 PMCR- 2022/06/01 CRDT- 2022/06/10 01:15 PHST- 2022/03/29 00:00 [received] PHST- 2022/04/29 00:00 [revised] PHST- 2022/04/30 00:00 [accepted] PHST- 2022/06/10 01:15 [entrez] PHST- 2022/06/11 06:00 [pubmed] PHST- 2022/06/14 06:00 [medline] PHST- 2022/06/01 00:00 [pmc-release] AID - ijms23116205 [pii] AID - ijms-23-06205 [pii] AID - 10.3390/ijms23116205 [doi] PST - epublish SO - Int J Mol Sci. 2022 Jun 1;23(11):6205. doi: 10.3390/ijms23116205.